// g++ -fopenmp -I .. -O3 -DNDEBUG -finline-limit=1000 benchmarkX.cpp -o b && time ./b

#include <iostream>

#include <Eigen/Core>

using namespace std;
using namespace Eigen;

#ifndef MATTYPE
#define MATTYPE MatrixXLd
#endif

#ifndef MATSIZE
#define MATSIZE 400
#endif

#ifndef REPEAT
#define REPEAT 100
#endif

int
main(int argc, char* argv[])
{
	MATTYPE I = MATTYPE::Ones(MATSIZE, MATSIZE);
	MATTYPE m(MATSIZE, MATSIZE);
	for (int i = 0; i < MATSIZE; i++)
		for (int j = 0; j < MATSIZE; j++) {
			m(i, j) = (i + j + 1) / (MATSIZE * MATSIZE);
		}
	for (int a = 0; a < REPEAT; a++) {
		m = I + 0.0001 * (m + m * m);
	}
	cout << m(0, 0) << endl;
	return 0;
}
